Ken Griffin
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Ken Griffin’s Perimeter Solutions PRM Stock Holding History

Ken Griffin’s Portfolio PRM Stock Details PRM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$8.05M Buy
329,650
+84,902
+35% +$2.17M ﹤0.01% 3577
2025
Q4 		$6.74M Buy
244,748
+82,598
+51% +$2.09M ﹤0.01% 3830
2025
Q3 		$3.63M Buy
162,150
+88,305
+120% +$1.67M ﹤0.01% 4947
2025
Q2 		$1.03M Sell
73,845
-508,033
-87% -$5.86M ﹤0.01% 7024
2025
Q1 		$5.86M Buy
581,878
+449,523
+340% +$5.04M ﹤0.01% 3634
2024
Q4 		$1.69M Sell
132,355
-346,102
-72% -$4.52M ﹤0.01% 5972
2024
Q3 		$6.44M Buy
478,457
+258,213
+117% +$2.67M ﹤0.01% 3546
2024
Q2 		$1.72M Sell
220,244
-213,690
-49% -$1.6M ﹤0.01% 5592
2024
Q1 		$3.22M Buy
433,934
+317,430
+272% +$1.71M ﹤0.01% 4653
2023
Q4 		$536K Buy
116,504
+34,403
+42% +$132K ﹤0.01% 7949
2023
Q3 		$373K Sell
82,101
-109,257
-57% -$609K ﹤0.01% 8697
2023
Q2 		$1.18M Sell
191,358
-395,392
-67% -$2.65M ﹤0.01% 6121
2023
Q1 		$4.74M Sell
586,750
-106,006
-15% -$914K ﹤0.01% 3916
2022
Q4 		$6.33M Buy
+692,756
New +$6.1M ﹤0.01% 3491
2022
Q3 		– Sell
-11,203
Closed -$121K – 13379
2022
Q2 		$121K Sell
11,203
-316,461
-97% -$3.37M ﹤0.01% 11209
2022
Q1 		$3.97M Buy
327,664
+110,298
+51% +$1.39M ﹤0.01% 4629
2021
Q4 		$3.02M Buy
+217,366
New +$2.75M ﹤0.01% 5324

Other funds holding PRM

WPL
WINDACRE PARTNERSHIP LLC Houston, Texas $9.34B AUM 17.41% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
DDC
DF Dent & Co Baltimore, Maryland $5.22B AUM 2.07% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Ken Griffin's PRM Position: Q1 2026 in Review

Ken Griffin increased its Perimeter Solutions (PRM) stake by 35% in Q1 2026, buying an estimated $2.17M and bringing the position to 329,650 shares worth $8.05M. The position accounts for ﹤0.01% of the portfolio, ranked #3577.

Ken Griffin first reported a position in PRM in Q4 2021 and has held it in 17 quarters since. 292 funds tracked by Wall St. Rank hold PRM as of Q1 2026.

  • Ken Griffin held 329,650 shares of Perimeter Solutions worth $8.05M as of Q1 2026.
  • Ken Griffin bought 84,902 Perimeter Solutions shares in Q1 2026, an estimated $2.17M.
  • Perimeter Solutions made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #3577 holding.
  • Ken Griffin first reported a position in Perimeter Solutions in Q4 2021 and has held it in 17 quarters since.
  • 292 funds tracked by Wall St. Rank held Perimeter Solutions as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.